Magnetic carbon nanotube

Details Magnetic carbon nanotube Magnetic carbon nanotube

2005-04-12

2005-04-12

Le, H. T. (Department: 1773)

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

C428S389000, C428S403000, C428S408000, C428S409000, C428S900000

Reexamination Certificate

active

06878444

ABSTRACT:
A carbon nanotube which exhibits ferromagnetism without a ferromagnetic metal imparted thereto and also has high thermal stability is provided. The carbon nanotube is characterized by being doped with nitrogen (which differs from carbon in valence electron) such that the doped nitrogen is segregated in a strip form at one end of the carbon nanotube. The thus doped nitrogen causes the carbon nanotube to have a difference in electron density and to exhibit ferromagnetism. The present invention makes it possible to provide a carbon nanotube exhibiting ferromagnetism without the necessity of imparting any magnetic metal thereto.

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